[DeTomaso] Holley Needle and Seat Assy's- Found the problem!

steven.liebenow at att.net steven.liebenow at att.net
Fri Oct 24 14:13:45 EDT 2008


Turns out there are a half bazzilion different needle and seats for Holleys....

Ok, probably more like 10 different ones....but for what most people on the streets run into, two.

Side pivot bowls
Center pivot bowls.

Side pivot has a .097" orifice size and a smaller needle assy,

Center pivot has a .110" orifice and a beefier looking needle.

So, if you install a larger version in the side pivot bowl, you get more gas in the bowl for the same amount of float movement...not necessarily good!

Found this on the Holley.com website.  Have a couple of great PDF's there, with ID numbers and parts lists, plus their general catalog...

Ciao!
Steve




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